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Capacitance measuring device using linear voltmeter - has transformer secondary winding connected via capacitor to bridge rectifier
Capacitance measuring device using linear voltmeter - has transformer secondary winding connected via capacitor to bridge rectifier
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机译:使用线性电压表的电容测量装置-变压器次级绕组通过电容器连接到桥式整流器
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摘要
The voltmeter permits measurement of capacity values with linear scale and avoids problems of providing logarithmic scale where a current measurement is employed. A mains protection transformer (1) has secondary winding connected via a capacitor being measured to bridge rectifier circuit (2). The current is rectified and flows through a resistor (3) across which a voltmeter (5) is connected to measure the voltage. A switch (4) permits selection of various sensitivities. These resistors are chosen to keep rectified voltage as small as possible.
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